Feature Series the Retina
ثبت نشده
چکیده
JULY 2014 CATARACT & REFRACTIVE SURGERY TODAY 55 M any techniques have been described for correcting aphakia with inadequate capsular support. The most common IOLs that are used include anterior chamber, posterior chamber, iris-fixated, and scleral-sutured IOLs; however, there is no current agreement on the ideal technique or technology. The Artisan aphakia lens (Ophtec; marketed as the Verisyse in the United States [Abbott Medical Optics]) was the first iris-fixated IOL. The Artisan IOL was introduced in the 1980s by Worst and colleagues and was designed for anterior chamber placement. Anterior chamber IOL implantation is considered a simple, effective, and safe technique with predictable visual results (Figure).1-3 Scleral-sutured lenses have some inconveniences, such as difficult technique and prolonged operating time.2 Several complications have been reported, such as lens decentering, retinal detachment, suprachoroidal hemorrhage, suture erosion, and rupture of the sutures with posterior dislocation.4-6 In this article, we describe a technique for the implantation of Artisan aphakic IOLs placed retropupillary, illustrating the safety and efficacy of this method of placement.
منابع مشابه
AN ANALYTICAL SOLUTION FOR DIFFUSION AND NONLINEAR UPTAKE OF OXYGEN IN THE RETINA
A simple mathematical model of steady state oxygen distribution subject to diffusive transport and non- linear uptake in a retinal cylinder has been developed. The approximate analytical solution to a reaction- diffusion equation are obtained by using series expansions. The computational results for the scaled variables are presented through graphs. The effect of the important parameters (1) d...
متن کاملOnline Streaming Feature Selection Using Geometric Series of the Adjacency Matrix of Features
Feature Selection (FS) is an important pre-processing step in machine learning and data mining. All the traditional feature selection methods assume that the entire feature space is available from the beginning. However, online streaming features (OSF) are an integral part of many real-world applications. In OSF, the number of training examples is fixed while the number of features grows with t...
متن کاملA Real-Time Electroencephalography Classification in Emotion Assessment Based on Synthetic Statistical-Frequency Feature Extraction and Feature Selection
Purpose: To assess three main emotions (happy, sad and calm) by various classifiers, using appropriate feature extraction and feature selection. Materials and Methods: In this study a combination of Power Spectral Density and a series of statistical features are proposed as statistical-frequency features. Next, a feature selection method from pattern recognition (PR) Tools is presented to e...
متن کاملStructure and arrangement of photoreceptors in the retina of big eye kilka, Clupeonella grimmi (Kessler 1877)
The big eye kilka, Clupeonella grimmi, is a marine fish living in depth of 20 to 200 meter of the Caspian Sea. Its eye and retina were processed for histological and SEM studies. Paraffin embedded retina was cut radially and tangentially in 5 ?m thickness and stained with hematoxylin and eosin method. The unstained sections were manipulated for SEM image observations. Tangential retinal sect...
متن کاملAn investigation on the effects of the Aloe Vera extract on the thickness of the retina in male diabetic rats
Retina is a part of the central nervous system derived from the neuroectoderm and made up of 5 layers.In this study, the changes in the thickness of the retinal layers as a consequence of diabetes and effect of Aloe Vera gel extract in male rats were assessed. Thirty Sprague Dawley adult male rats (175 ± 25 g) in two age groups (4 and 8 weeks) were divided into 6 groups of 5 as control, diabeti...
متن کاملComparative Retina Stratification in Embryos, Larvae and Adults of Alburnus chalcoides
The present investigation considered retina structure in embryos, larvae and adult Alburnus chalcoides. Histological samples of retina were provided from adult fish, different stages of embryonic and larval development. Eye primordia formed from ectoderm at 16 hours after fertilization (16hAF) and then developed to eye cups. Initial eye cup which contained undifferentiated retina began to form ...
متن کامل